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Finding the Fourth Proportional to 129,774, 179,088.36 and 70,158

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Solution

The fourth proportional to 129,774, 179,088.36 and 70,158 is: 96,818.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,774 : 179,088.36 = 70,158 : x
  2. Step 2: Convert to fraction form
    129,774/179,088.36 = 70,158/x
  3. Step 3: Cross multiply
    129,774x = 179,088.36 × 70,158
  4. Step 4: Simplify right side
    129,774x = 12,564,481,160.88
  5. Step 5: Solve for x
    x = 12,564,481,160.88/129,774
  6. Step 6: Final answer
    x = 96,818.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.